The invention discloses a garbage collection boat. The garbage collection boat comprises a boat body, a baffle, a drainage plate and an air cylinder, wherein the boat body is sequentially provided with a cockpit, a garbage drainage cabin and a garbage collection cabin, the cockpit is internally provided with an engine, and the bottom of the cockpit is provided with a paddle which is connected with the engine; the baffle is arranged between the garbage drainage cabin and the garbage collection cabin, and the horizontal height of the baffle is smaller than the horizontal height of the garbage drainage cabin and the garbage collection cabin; the drainage plate is arranged on the surface of a river, and one end of the drainage plate is connected to an inlet of the garbage drainage cabin in an inclined manner; a drive part of the air cylinder is provided with a push plate, the air cylinder is arranged on one side of the garbage drainage cabin and used for pushing garbage in the garbage drainage cabin into the garbage collection cabin through the push plate; and a water drainage opening is formed in the lower end of the garbage collection cabin, and the water drainage opening is internally provided with a water pump. The garbage collection boat is relatively high in garbage collection efficiency.